require 'facets/kernel/meta_class' module Kernel # Add method to a meta-class --i.e. a singleton method. # # class X; end # X.meta_def(:x){"x"} # X.x #=> "x" # # CREDIT: WhyTheLuckyStiff def meta_def( name, &block ) meta_class do define_method( name, &block ) end end end